StoneX Group Inc.
StoneX Group Inc. (SNEX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SNEX · as of Sep 30, 2025
Ownership Breakdown
377
Institutional Holders
▲ 20 vs Q2
$4.18B
Total Inst. Value
▲ $557.88M vs Q2
79.25M
Shares Outstanding
freeFloat 87.57%
41.44M
13F Shares Held
▲ 1.69M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SNEX largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. security & commodity brokers, dealers, exchanges & services | 6.67M | 14.25% | 14.25% | $672.73B | Nov 12, 2025 | ▲ 230.2K |
VANGUARD GROUP INC security & commodity brokers, dealers, exchanges & services | 4.02M | 8.60% | 8.60% | $405.73B | Nov 7, 2025 | ▲ 1.03M |
PRICE T ROWE ASSOCIATES INC /MD/ security & commodity brokers, dealers, exchanges & services | 2.41M | 5.16% | 5.16% | $243.39B | Nov 14, 2025 | ▲ 1.01M |
AMERICAN CENTURY COMPANIES INC security & commodity brokers, dealers, exchanges & services | 2.16M | 4.61% | 4.61% | $217.67B | Nov 12, 2025 | ▼ 196.0K |
STATE STREET CORP security & commodity brokers, dealers, exchanges & services | 1.82M | 3.90% | 3.90% | $184.05B | Nov 14, 2025 | ▲ 68.4K |
DIMENSIONAL FUND ADVISORS LP security & commodity brokers, dealers, exchanges & services | 1.42M | 3.03% | 3.03% | $143.00B | Nov 12, 2025 | ▼ 232.2K |
ALTRAVUE CAPITAL, LLC security & commodity brokers, dealers, exchanges & services | 1.31M | 2.81% | 2.81% | $132.58B | Nov 12, 2025 | ▲ 11.7K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. security & commodity brokers, dealers, exchanges & services | 1.21M | 2.58% | 2.58% | $121.62B | Nov 14, 2025 | ▲ 501.1K |
VAN BERKOM & ASSOCIATES INC. security & commodity brokers, dealers, exchanges & services | 1.20M | 2.57% | 2.57% | $121.14B | Nov 4, 2025 | ▲ 3.4K |
GEODE CAPITAL MANAGEMENT, LLC security & commodity brokers, dealers, exchanges & services | 1.14M | 2.43% | 2.43% | $114.87B | Nov 12, 2025 | ▲ 44.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
30
Increased
+4.65M shares1
New Positions
first time holders18
Decreased
−1.30M shares0
Sold Out
fully exitedNet shares change (top 50)
+3.35M
+4.65M / −1.30M
Net new holders
+13
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SNEX insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Maurer Mark Lowry Chief Risk Officer | May 22, 2026 | Sale | 11,398 | $112.25 | $1.28M | 135.5K | Form 4 ↗ |
Smith Philip Andrew Chief Executive Officer | May 22, 2026 | Sale | 8,535 | $112.72 | $962.1K | 506.2K | Form 4 ↗ |
Rotsztain Diego Chief Governance/Legal Officer | May 18, 2026 | Sale | 20,054 | $111.48 | $2.24M | 36.9K | Form 4 ↗ |
Rotsztain Diego Chief Governance/Legal Officer | May 20, 2026 | Sale | 13,696 | $112.79 | $1.54M | 23.2K | Form 4 ↗ |
OCONNOR SEAN MICHAEL Executive Vice-Chairman-Board | May 15, 2026 | Sale | 140,070 | $110.31 | $15.45M | 1.24M | Form 4 ↗ |
OCONNOR SEAN MICHAEL Executive Vice-Chairman-Board | May 19, 2026 | Sale | 72,140 | $109.94 | $7.93M | 1.24M | Form 4 ↗ |
OCONNOR SEAN MICHAEL Executive Vice-Chairman-Board | May 18, 2026 | Sale | 87,790 | $111.46 | $9.79M | 1.24M | Form 4 ↗ |
Dunaway William J Chief Financial Officer | May 15, 2026 | Sale | 64,017 | $110.46 | $7.07M | 273.6K | Form 4 ↗ |
BEXIGA ANNABELLE G director | May 15, 2026 | Sale | 1,500 | $112.82 | $169.2K | 21.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
StoneX Group Inc. (SNEX) is primarily owned by institutional investors, who hold approximately 52.3% of total shares outstanding. Company insiders own approximately 12.43%, while retail and public investors account for the remaining 35.28%.
The largest institutional shareholder of StoneX Group Inc. is BLACKROCK, INC., holding approximately 6.67 million shares — equal to 14.25% of outstanding shares — as of September 30, 2025.
A total of 377 institutional investors currently hold SNEX stock, with a combined institutional value of approximately $4.18 billion as of the most recent 13F filing period.
Frequently asked questions
SNEX ownershipStoneX Group Inc. (SNEX) is primarily owned by institutional investors, who hold approximately 52.3% of shares. The largest shareholder is BLACKROCK, INC. with a 14.25% stake. Company insiders hold 12.43%. Data sourced from SEC Form 13F as of September 30, 2025.